AZ 1712 then FR 8837 at Fiumicino
Catania → Rome → Zagreb
Timetable, Rome time
20:40AZ 1712 from Catania at the gate
19:00FR 8837 to Zagreb leaves the gate
22 h 20 apart on the timetable, overnight
FR 8837 leaves 22 h 20 after AZ 1712 arrives on the timetable: more than half a day, so not a connection we count.